Lesson Planet
Search educational resources
  • Sign In Try It Free
  • AI Teacher Tools
    • Discover Resources Search reviewed educational resources by keyword, subject, grade, type, and more
    • Curriculum Manager (My Content) Manage saved and uploaded resources and folders To Access the Curriculum Manager Sign In or Join Now
    • Browse Resource Directory Browse educational resources by subject and topic
    • Curriculum Calendar Explore curriculum resources by date
    • Lesson Planning Articles Timely and inspiring teaching ideas that you can apply in your classroom
    • Our Story
    • Frequently Asked Questions
    • Testimonials
    • Contact Us
  • Pricing
  • School Access
    • Your school or district can sign up for Lesson Planet — with no cost to teachers
      Learn More
  • Sign In
  • Try It Free
The Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria for Two Triangles to Be Similar Lesson PlanThe Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria for Two Triangles to Be Similar Lesson Plan
Publisher
EngageNY
Resource Details
Curator Rating
Educator Rating
Not yet Rated
Grade
9th - 10th
Subjects
Math
1 more...
Resource Type
Lesson Plans
Audiences
For Teacher Use
1 more...
Duration
1 hr
Instructional Strategies
Guided Practice
3 more...
Technology
Presentation
Year
2015
Usage Permissions
Creative Commons
BY-NC-SA: 3.0
cc
Language
English, Arabic
Lesson Plan

The Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria for Two Triangles to Be Similar

Curated and Reviewed by Lesson Planet
This The Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria for Two Triangles to Be Similar lesson plan also includes:
  • Similarity, Proof, and Trigonometry - Module Overview (PDF)
  • Similarity, Proof, and Trigonometry - Module Overview (Doc)
  • The Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria for Two Triangles to Be Similar (Doc)
  • The Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria for Two Triangles to Be Similar (PDF)
  • The Side-Angle-Side (SAS) and Side-Side-Side (SSS) Criteria for Two Triangles to Be Similar (Doc)
  • Assessment
  • Answer Key
  • Join to access all included materials

Playing with mathematics can invoke curiosity and excitement. As pupils construct triangles with given criteria, they determine the necessary requirements to support similarity. After determining the criteria, they practice verifying similarity of given figures. 

15 Views 9 Downloads
CCSS: Designed

Concepts

similarity, similar triangles, proportional reasoning

Additional Tags

math

Instructional Ideas

  • Incorporate graphic organizers to record conclusions from the lesson

Classroom Considerations

  • Requires construction tools and a protractor or patty paper
  • Assumes an understanding of congruence criteria 
  • Number 17 in a series of 36 lessons

Pros

  • Emphasizes vocabulary and notation in written statements
  • Teacher guide includes suggestions for scaffolding and critical thinking questioning

Cons

  • None

Common Core

HSG-SRT.A.2 HSG-SRT.A.3 HSG-SRT.B.5 HSG-MG.A.1 MP3 MP8

View 38,632 other resources for 9th - 10th Grade Math

© 1999-2026 Learning Explorer, Inc.
Teacher Lesson Plans, Worksheets and Resources

Sign up for the Lesson Planet Monthly Newsletter

Open Educational Resources (OER)

  • Health
  • Language Arts
  • Languages
  • Math
  • Physical Education
  • Science
  • Social Studies
  • Special Education
  • Visual and Performing Arts
View All Lesson Plans

Discover Resources

  • Our Review Process
  • How it Works
  • How to Search
  • Create a Collection

Manage Curriculum

  • Edit a Collection
  • Assign to Students
  • Manage My Content
Contact Us Site Map Privacy Policy Terms of Use